Using postfix

Checking mta in use on Red Hat and Debian

• alternatives --display mta

Changing to postfix/sendmail

• use alternatives --config mta to set mta
• service sendmail/postfix stop
• service postfix/sendmail start

Using postfix

• working directory is /etc/postfix/
• aliases : Change root: postfix to root: VALID EMAIL_ in /etc/aliases!!!
• canonical: Add entry for local root: root root@HOSTNAME.ethz.ch
• main.cf:
  • Set myhostname = HOSTNAME.ethz.ch
  • Set mydomain = hbt.arch.ethz.ch
  • Set myorigin = $mydomain
  • Add canonical_maps = hash:/etc/postfix/canonical
• Call newaliases
• Call postmap canonical
• Monitor /var/log/maillog
• Send test mails from root to local user, from local user to root

The entry in canonical is needed so mail does not get sent to root@hbt.arch.ethz.ch. The entry in aliases is recommended by postfix setup. Settings myhostname is most likely unnecessary but there for completeness. mydomain is used for rewriting of outgoing mails. With standard settings of postifx only mail from 127.0.0.1 will be accepted, none from available non-local interfaces. Drawback of this configuration is, that no local mail is stored and if a mail is locally sent to an account without canonical entry it will end up at user@hbt.arch.ethz.ch.

Using sendmail

Not supported yet.

-- TorstenSpindler - 24 Sep 2004